计算机应用研究2017，Vol.34Issue(1)：211-213,3.DOI:10.3969/j.issn.1001-3695.2017.01.047
一种新颖的O FD M信号子载波数估计方法
Novel blind estimation method of number of OFDM subcarriers
摘要
Abstract
Aiming at the poor performance and high computation complexity problem of traditional estimation methods for the number of the subcarriers of the OFDM signal in low signal noise ratio and multipath channel,this paper proposed a novel method to estimate the number of the OFDM signal.Firstly,it calculated the autocorrelation matrix of the received OFDM sig-nal.Secondly,it implemented the eigen-decomposition for the autocorrelation matrix and extract all the eigenvalues.Finally, it estimated the number of the subcarriers of the OFDM signal according to the distribution characteristic of the eigenvalues. The experimental results prove the effectiveness and reliability of the proposed method under the Gaussian white noise and mul-tipath channel circumstance.关键词
OFDM/子载波数估计/自相关矩阵/特征分解/计算复杂度Key words
OFDM/subcarrier number estimation/autocorrelation matrix/eigen-decomposition/computation complexity分类
信息技术与安全科学引用本文复制引用
张海川,雷迎科..一种新颖的O FD M信号子载波数估计方法[J].计算机应用研究,2017,34(1):211-213,3.基金项目
安徽省自然科学基金资助项目（1308085QF99，1408085MF129）；国家自然科学基金资助项目 （）
